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PRGFitter [message #15473] Mon, 09 September 2013 19:54 Go to previous message
Simon Reiter is currently offline  Simon Reiter
Messages: 44
Registered: May 2013
continuous participant
From: *wlan.uni-giessen.de
Hi everybody,

while plotting some stuff, I scanned some results from the PndVtxPRG fitter.
I recognized the error in the release, but I could also confirm it in the trunk. Since the release won't be fixed, I guess, I will not consider it anymore.
I reconstruct D mesons and do the fit as follows:
PndVtxPRG prgfitter(d0[i]);
TVector3 vertD;
vertD.SetXYZ(0,0,0);
prgfitter.Fit();
Float_t chi2s=prgfitter.GetChi2();
vertD=d0[i]->GetFit()->Daughter(0)->GetPosition();
Float_t vertDrho=vertD.Mag();

I write the chi2s and vertDrho in a tuple. I was wondering, that for chi2s, I get in some events -20 while the vertDrho is set to nan.
Any ideas?
BTW: In the release, both was set to nan.

Best regards
Simon

PS: the trunk folder was updated this morning.
 
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